== sanity test 101b: check stride-io mode read-ahead =========================================================================== 20:12:29 (1763341949)
striped dir -i1 -c2 -H all_char /mnt/lustre/d101b.sanity

1.386594s, 6.04979MB/s
Read-ahead success for size 8192

1.448985s, 5.7893MB/s
Read-ahead success for size 16384

1.305964s, 6.42331MB/s
Read-ahead success for size 32768

1.516269s, 5.5324MB/s
Read-ahead success for size 65536

1.265270s, 6.6299MB/s
Read-ahead success for size 131072

1.272950s, 6.5899MB/s
Read-ahead success for size 262144

0.995205s, 8.42903MB/s
Read-ahead success for size 524288

0.901189s, 9.30838MB/s
Read-ahead success for size 1048576